java - Google Glass 手势检测器和 setBaseListener

Question

我想实现手势检测器来为我的 Google Glass 设置 baselistener。Android Studio 给了我一个错误，说touchpad找不到该符号。我已经导入了相关的库。

setBaseListener继续报错。

private GestureDetector createGestureDetector(Context context,  GestureDetector.OnGestureListener listener) {
    GestureDetector gestureDetector = new GestureDetector(context, listener);

    //Create a base listener for generic gestures
    gestureDetector.setBaseListener(new GestureDetector.BaseListener() {
        @Override
        public boolean onGesture(Gesture gesture) {
            if (gesture == Gesture.TAP) {
                // do something on tap
                return true;
            } else if (gesture == Gesture.TWO_TAP) {
                // do something on two finger tap
                return true;
            } else if (gesture == Gesture.SWIPE_RIGHT) {
                // do something on right (forward) swipe
                return true;
            } else if (gesture == Gesture.SWIPE_LEFT) {
                // do something on left (backwards) swipe
                return true;
            }
            return false;
        }
    });

Answer 1

您的代码格式有点偏离，但似乎您正在将“gestureDetector”初始化为

GestureDetector.OnGestureListener listener) { GestureDetector gestureDetector = new GestureDetector(context, listener);

但是，根据 https://developers.google.com/glass/develop/gdk/reference/com/google/android/glass/touchpad/GestureDetector上的 Glass GDK 文档

我只看到一个构造函数：public GestureDetector (Context context)

根据你在哪里建造这个，你能试试吗

GestureDetector gestureDetector = new GestureDetector(context);

或者

GestureDetector gestureDetector = new GestureDetector(this);

具有以下进口：

import com.google.android.glass.touchpad.Gesture;
import com.google.android.glass.touchpad.GestureDetector;